Autofill any drawn shape

The ellipse and rectangle tool already have this function to automatically fill a newly created shape so id love to see this simillar done on a custom drawn shape.
Just draw a shape and have the program connect the starting point with the end point and automatically fill it with color. I have seen couple of programs already do it and it would help save a lot of work when working on details or line lees drawings, even when coloring and shading.

2016-07-29_165417.jpg

2016-07-29_165449.jpg

Hi Miu,

Thank you for the suggestion and the matching images. That always helps for clarity.

Marie-Eve

i made a quick example to try speciffy more what iam interested to do with such tool in a video

https://dl.dropboxusercontent.com/u/5214903/commission%20nsfw/lasso%20fill%20example.wmv
The recorder isnt the best but it shows what the tool does so i could do more effective animations like i made the animals and monsters in wild warriors
http://www.kaydabi.com/games/
Or this kind of style that i usually do
https://dl.dropboxusercontent.com/u/5214903/commission%20nsfw/2016-08-06_205037.jpg

Yes its a good feature.
They have that in TVpaint. but then its pixel-images.

/ Mattias